High-strength cold-rolled low-carbon microalloyed steels are widely used in the automotive industry. Preference is generally given to microalloying with niobium, since its effect on mechanical properties of steel most pronounced due both precipitation hardening and a reduction ferrite grain size. For operation car, corrosion resistance metal parts an important factor, since, along other materia...

Austenitization is an inevitable occurrence during the heat treatment of steels. Despite this consideration, less attention has been paid so far to the study of the formation of austenite as compared with the vast amount of research on its decomposition. That is because the steel properties depend basically on the transformation processes following austenitization. However, the initial austenit...

The hot workability of microalloyed steel was studied in the deformation temperature range 850?1200?C and strain rate 0.001-100s-1. constitutive relation flow stress with temperature, established to construct processing maps steel. were constructed using conventional power law, integral method, Arrhenius equations. developed used predict optimal conditions validated metallurgical examinations. ...